Asturias, officially the Principality of Asturias, is an autonomous community of Spain. It is coextensive with the province of Asturias, and contains nearly all of the territory that was part of the Kingdom of Asturias in the Middle Ages. The autonomous community of Asturias is bordered by Cantabria to the east, by Castile and León to the south, by Galicia to the west, and by the Bay of Biscay to the north.